Home / 87,344.90-131,017.35-80,929.70

Finding the Fourth Proportional to 87,344.90, 131,017.35 and 80,929.70

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Solution

The fourth proportional to 87,344.90, 131,017.35 and 80,929.70 is: 121,394.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,344.90 : 131,017.35 = 80,929.70 : x
  2. Step 2: Convert to fraction form
    87,344.90/131,017.35 = 80,929.70/x
  3. Step 3: Cross multiply
    87,344.90x = 131,017.35 × 80,929.70
  4. Step 4: Simplify right side
    87,344.90x = 10,603,194,830.30
  5. Step 5: Solve for x
    x = 10,603,194,830.30/87,344.90
  6. Step 6: Final answer
    x = 121,394.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.